利用液晶显示器制造过程副产品活化的硅酸盐水泥矿渣混凝土的新拌及硬化性能

Fresh and Hardened Properties of Portland Cement-Slag Concrete Activated Using the By-Product of the Liquid Crystal Display Manufacturing Process.

作者信息

Choi Sung, Pyo Sukhoon

机构信息

Department of Civil Engineering, Kyungdong University, 27 Gyeongdongdaehak-ro, Yangju-Si 11458, Korea.

Department of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulju-gun, Ulsan 44919, Korea.

出版信息

Materials (Basel). 2020 Sep 30;13(19):4354. doi: 10.3390/ma13194354.

DOI:10.3390/ma13194354

PMID:33007900

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7579050/

Abstract

This experimental research investigated the applicability of the liquid crystal display (LCD) by-product of the refining process as a sustainable and alternative alkali activator for ground granulated blast-furnace slag (GGBFS) blended cement concrete. Three levels of binder replacement using the industrial by-product, and four water/binder ratios were considered in order to evaluate the effects of the replacement in fresh and hardened properties of the blended concrete. XRD and TG analyses confirmed that the by-product that contains abundant alkali compounds promotes the reactivity of GGBFS. The test results indicated that the incorporation of the by-product results in delayed setting and degraded workability due to the highly porous nature of the by-product, yet shows rapid early-age strength development of the blended concrete as conventional alkaline activators for GGBFS. These characteristics shed light on a simple yet effective and practical means of reusing the industrial by-product as an alternative alkaline activator.

摘要

本实验研究探讨了精炼过程中产生的液晶显示器（LCD）副产品作为一种可持续的替代碱激发剂，用于磨细粒化高炉矿渣（GGBFS）掺合水泥混凝土的适用性。为了评估该工业副产品替代胶凝材料对混凝土新拌性能和硬化性能的影响，考虑了三个水平的替代量以及四个水胶比。X射线衍射（XRD）和热重（TG）分析证实，该富含碱化合物的副产品促进了GGBFS的活性。试验结果表明，由于副产品的高孔隙率，掺入该副产品会导致凝结时间延迟和工作性变差，但与用于GGBFS的传统碱性激发剂一样，能使掺合混凝土早期强度快速发展。这些特性为将该工业副产品作为替代碱性激发剂进行简单、有效且实用的再利用提供了思路。